Basic Concepts of OOPs

Why should we learn object oriented programming languages?

(Hint - 2 answers are correct)

• It connects to the real world

• It is fun to learn

• Conceptually this is similar to what we see in our life

• It is in the form of functions and procedures

Ram is an excellent singer and got this skill from his grand mother. Which C++ concept does this correlate to?

• Data Abstraction

• Inheritance

• Encapsulation

• Polymorphism

Ali transferred the money from his HDFC bank account to Axis bank account of his friend(Neha) for buying a tennis racket. The transaction was successful in this case.

If we were to write a C++ program for this scenario, what classes and objects would you be creating?

(Hint - multiple answers are correct)

• Class :- Customer_name

  Objects :- Ali, Neha

• Class :- Items_purchased

  Objects :- Tennis_racket

• Class :- Money_transfer

  Objects :- SB, FD, RD

• Class :- Bank_Account

  Objects :- HDFC_bank_account, Axis_bank_account

If I create a class, I can create unlimited number of objects from it?

• True

• False

• Don't know

How will Data Encapsulation help us in C++?

(Hint - multiple answers are correct)

• Data members can be accessed without the functions in a class

• Data members can be accessed only through functions in a class

• Data members and functions are together coded in a class

• Data members can be manipulated through functions in a class

In C++, addition symbol(+) is used for calculating numbers as well as it is used to concatenate strings together. Which C++ concept are we trying to explain here?

• Data abstraction

• Modularity

• Data encaspulation

• Operator Overloading

  (polymorphism)

We know how to use smartphones and this knowledge is sufficient for us. We do not need to know how the smartphone works internally. Which C++ concept is applied here?

• Inheritance

• Data encapsulation

• Data Abstraction

• Polymorphism

Basic advantage of applying OOPS is because

(Hint - multiple answers are correct)

• Complex Software cannot be managed

• Work allocation is easier

• Code can be reused (Reusability)

• Managing the code is easier (Modularity)

A class called 'Student' is defined with following data member and functions:

Data members - sname, srollno, scoursename, smarks

Functions - getcoursename(), getmarks(), setmarks(), setcoursename()

Two objects 'stud1' and 'stud2' are created out of this class.

Can I update the 'stud1.marks' member without using function setmarks()?

• Yes, we can update

• No, it is not possible

• Can't say

The advantage of Abstraction concept in C++ is:

• Code reusability

• Hides complexity

• Data security

• Connects to the real world